Leather shaving machine



Patented June 21, 1932 FRANK WAYIQAND, on MASSACHUSETTS OFFICE n Yd -Y LEATHER sHAvING MACHINE Application led August 19, 1930. Serial No. 476,326.

This invention relates to leather shaving machines of the kind employed in tanneries and other leather working; establishments. Heretofore it has been considered substantially impossible to shave green hides direct 15 from the untanned yhide have considerable commercial value, while the removal of the undesirable portionslof the hide before tanning results in the savingin the tanning agentemployed.

\ The present invention provides an improvement in means by which :the hides, whether tanned or untanned,.may be delivered Yto the rotary shaving cutter. GeneralT characteristics of the apparatus hereinafter set forth 35 are illustrated and described in my copending applications, Serial No. 384,635,1iled August 9, 1929; Serial No.425,810, led February 4, 1930; and Serial No. 468,314, filed July 16, 1930, thezlatter disclosing one'desirable ,30 form of work-feedingmeans. rIhe present inventlon pertalns to an improvement 1n;

ifeeding means of the general type disclosed in the last-named application.. Y j b f In the accompanying drawing I have il- 35 lustrated in side elevation, partly in section,

a leather shaving machine embodying my improved feeding means. Y Y Y InY he illustrated construction the bed roll support 2 is 'pivotally mounted at the point'* 3 of the main frame 1 and this bed roll support carries -my improvedfeeding devices. This support is arranged to be oscillated toward and from the rotarycutter 14 by means similar to that disclosed in my aforesaid cof pending applications, such means comprising a treadle lever 5, connecting links 6 and 7,

and a toggle'device 8 adapted to move the upper end of the support toward the cutter when the treadle .is Vdepressed and to -lock 50 the support inoperative position.V

the apron9 is sov driven that its upper run*Vv n `VAn endless conveyor belt or apron 9, which 'y l Y may be of any suitable material, for example canvas, rubber, flexible metal, or-the likeis supported by spaced parallelvrolls 10 andl 11 journaled in suitable bearings carried by the support 2. The roll 11 is arranged in closely spaced relation and parallel to thev bed roll f 12, the latter as usual having a hard (e. g. metallic) surface and cooperating with the cutter 14 during the shaving operation.V `The rolls 11 and 12 are rotated in the same direc-` tion in any suitable manner, as forexample by means of a drive belt or chain 13 passing around pulleys or sprockets on the ends of the rollsl 11 and 12 and driven throughfany suitable train of belts or gearing from the drive shaft 15 of the machine. ,'Ihe driving connections may be suchas to rotate the rolls 11 and 124continuously while the machine is when it reaches the delivery end of the belt.

'At the extreme'front of the support 2 I l prefer to arrange an idler roll 16, free to turn in 'suitable bearings, and constituting a rest,g85 against which the operatormay lean as he presents the work to the machine.

For stripping the Vwork from the bed roll I prefer to provideathin-.wedge-like Vblade afterthe cutting operation. A'roll 18 may, if desired, bevarranged` below the bed roll 12 arranged abovepthe bedy roll to assi-st the latter in advancing the' work toward L the cutter.

lVhen thesupport is in operative position, im@

17 having its edge irl-close proximity' to they90 y .bed roll so as to peel the work from the roll Y *approaches the roll l2. The operator places a hide on the apron and moves it about to bring it into the best position for action by the cutter. In thus positioning the hide the operator may lean against the depending portion of the hide, pressing it against the roll 16 so as to afford a firm grip for holding the Work back to some extent against the pull of the apron. The hidetends to stick closely to the apron but byarranging the bed roll outside of the apron andinovingthe roll and apron in the same direction, the bed roll strips other and equivalent arrangements maybe employed Without departingjfrom the spirit of the invention. .Y y. I claim:

i l. A leather Ashaving machine comprising a cutter, abed roll having a hard Worlr-supporting surface cooperable YWith the cutter, and a conveyor device terminating closely adjacent to the'bed roll to the latter.

"2. A leather `shaving machine ycomprising a cutter, f an `endlessapron hzrrvingjaY Work! supporting and advancingsurface, and 'a hardsurfaced bed roll at'the endA ofjsaidsur#V 'face,"the bed rollv beingso arranged rand so driven relatively to the Work-supporting and the Work from the latter;y

3.Y A leather shaving machine comprising a cutter, and means for presenting Worlrto the cutter comprising closely spaced .parallel rolls adjacent to the cutter, one roll being a advancing surface of the apronY as to strip -hard surfacedbed roll,"thev otherroll form'- ing one support for an endless Worksfeeding aPlOIl, and means for; rotatingboth rollsjn the same direction.

" f 4. In a leather shaving machine including a cutter, a bed roll cooperating therewith, an

Vendless apron fo'rfeedi'ng the Work to the bedroll, andia freely rotatableroll adjacent' to the receiving end ofthe apron. A 5. In a leather shaving machine including a cutter, van'V endless feed apron supported upon parallel rolls, a bed roll parallel to oneV of the apron rollsand arrangedto receive the *Worlr from the apron and to `cooperate with the cutter in shavingthe Work, means to strip the Workfrom the bed roll after it'pass'es the cutter,"and a freely rotatable roll'adjacent to the receiving endv of the apron and against which the operator may press Y- the Work to assist'in controlling it.

r6. A leather shaving machine comprising for delivering the vWork a cutter, an endless feed apron supported upon parallel rolls, a hard surfaced bed roll closely adjacent and parallel to one of the apron-supporting rolls, andV means tov strip the Work from the bed roll afterit passes the cutter. v

7. A. lleather shaving machine comprising a cutterand means for presenting *Work to the cutter comprising parallel rolls adjacent to the cutter, one roll -being a bed roll and the other roll constituting one support for an endless Work-feeding apron, means for rotating both rolls in the same direction, and anotherl set -of parallel rolls spaced from said first set, one roll of the second set forming another support for said endless apron and the other roll beingso located as to permit .the operator Vto lean yag'gainst it in? guiding the Work.

f 8. 'In a leather shaving machinefincluding cutter, meansfor Y.f'eedingwork tov'theKcut-f ter, comprising a ,movable support, a bed roll thereon, a freely rotatable roll mountedI on said support paralleleto/said bed'iroll, `and spaced therefrom,A means .fortransferrinfg Worlr from-saidV lastsnamed roll to said bed rolll andl means for Amoving-said support bodily'towardfsaid lcutter to'bring the bed rollinto cooperative relation therewith.

' 1 9. In a leather:shavingmachine including acu'tter, means for feeding Work to the cutter,

comprising movable` support, l a bed roll "thereon, a freely .rotatable -ro'll mounted Von ''said support paralleli` toi-said bed roll'and 1 spaced therefrom, intermediate rollsk on said support. parallel to and :adj acentfsaidbed `roll and said freelyfrotatable roll, an apron, carried by said intermediate rolls, and: by'which Vvvbrli: is V*transferred Vfrom the freely'V rotatable roll to thebedjroll, andmeansformo'ving nsaidfsnpp'ort bodily tow-ard said cutter-to -bring the-bed roll into cooperative-relation therewith." v'

` 1o. Vin a leather Shaving maciiiae'ihciudng -Y a` cutter, means'vfor feeding 'work-to the cutter, comprising aY movable support, a bed roll thereon,fa-freely rotatable roll mounted lon support Aparallel to' said .bed roll/'and spaced therefronn'. means .for transferring VWork from said last namedfroll vtosaid bed -r'oll,a pinch roll mounted-.adj'acent'said cut- "ter Aandindependent'sof Vsaid supportpand means for moving said -V support bodily --to- Ward said'cuttert pinch roll'to bring said bedl roll' into 'cooperative relation therewith.

l1. In: -a leather" shaving .Y machine includ- `ing a cutter, means'for' feeding Work toV the cutter, comprising a: movable support, a Abed roll thereon, a freely rotatable rollY mounted on said support paralleljto said bed rolly and spaced therefrom, intermediate rolls on said support .parallel-'to and adjacent 'said bed and by: which Work74 istransferred from the rolland said freely rotatable roll, respectively, l

roll andj said freely rotatableroll, respectively, an apron'carred by said `internaedate rolls freely' rotatable roll" to the bed roll, a pinch roll mounted adjacent said cutter` and independent of said support and means for moving said support bodily toward said cutter and pinch roll to bring said bed roll into cooperative relation therewith. v Signed by me at Boston, Massachusetts, this 15th day of Au ust, 1930.

' F ANK WAYLAND. 

